Gas-furnace.



No. 866,688. PATENTED SEPT. 24, 1907.y P. 6: C. SGHREIBER & G. E. FLAHARIDA.

GAS PURNAGB.

PPLIUATION FILED rma. 2s. 1907.

Illll 1H: mmm: Prrins rol, wAsm sfo UNITED sTATEs yPATENT oEEIeE'.

GAS-FURNGE.

Specification of Letters Patent.l

Patented Sept. 24, 1907.

Application filed February 28, 1907. Serial No. 359,886.

To all whom t may concern:

Be it known that we, FRANK SCHREIBER, CARL SCHREIBER, and 'CHARLES E. FLAHARIDA, citizens of the United States, residing at Zanesville, in the county of Muskingum and State of Ohio, have invented certain new and useful Improvements in Gas-Furnaces; and we do declare the following to be a full, clear, and exact description of the invention, suchV as will enable others skilled inthe art to which it appertains to make and .use the same.

This invention relates to improvements in gas burning furnaces.

The object of the invention is to provide a furnace of this character by means of which an even circulation of air and heat is produced and means whereby the heated air is conducted from the furnace to the rooms or apartments to be warmed.

With the above and other objects in view which will appear as the nature of the invention is better understood, the invention consists in certain novel features of construction, combination and arrangement of parts, as will be hereinafter more fully described and claimed.

In the accompanying drawings, Figure 1 is a vertical sectional view through the outer casing of the furnace; Fig. 2 is a similar View through the furnace proper and the outer casing thereof; Fig. 3 is a horizontal sectional view taken through the combustion chamber on the line 3 3 of Fig. 2; Fig. 4 is a similar view showing the heat conducting pipes on the line 4 4 ofFig. 2 g Fig. 5 is a similar view taken through the radiating drum on the line 5 5 of Fig. 2; and Fig. 6 is a plan view of the burner coils.

Referring more particularly to the drawings, l denotes the furnace proper which is inclosed by a cylindrical shell or casing 2 which may be formed of sheet iron or any suitable material and is closed at its upper end by a top 3 in which is arranged the hot air conducting pipes 4 by means of which the heated air from the furnace is conducted to the rooms or apartments to be warmed, The furnace proper consists of an annular combustion chamber 5 having formed therein a centrally-disposed annular air passage 6, the walls of which form the inner side walls of the combustion chamber as shown. The upper portions of the outer walls of the combustion chamber preferably incline or converge inwardly toward the upper end of the chamber as shown at 6 to form deflecting walls by means of which the flame from the burner is directed upwardly and inwardly towards a series of vertically disposed heat conducting tubes 7 which are arranged in the top wall of the combustion chamber and are connected at their upper ends to a radiating drum 8.

The drum 8 is preferably cylindrical in shape and has formed therein a centrally-disposed air passage 9 which communicates with the lower air passage 6 of the com- 55 bustion chamber and provides for the passage of cold air between' the combustion chamber and radiating drum and also through the heat conducting tubes 7. Oold air in thus passing through the passages 6 and 9l and between the heat conducting tubes 7 is thoroughly 60 partition wall 10 which is arranged therein between the 65 upper ends of the heat conducting tubes 7 and the inner wall of the drum. The partition 10 extends upwardly from the bottom to within a short distance of the closed upper side of the drum and forms a bathe plate by means of which the heat passing out of the tubes 7 is 70 forced to circulate through the drum before passing out of the discharge o1' fume pipe 12 which is connected to the radiating drum adjacent to the lower edge of its inner wall as shown at 13. The radiating drum is also provided with a series of vertically-disposed passages 111l which are arranged in an annular series around the drum between the upper ends of the heat conducting tubes 7 and the outer wall of the drum, as shown. The tubes 14 provide for an increased heating surface whereby the air from the lower' end of the furnace in passing 80 upwardly will enter and pass through said tubes, and will be more thoroughly heated. By providing an increased heating surface for the radiating drum, the heating capacity of the furnace is materially increased.

Arranged in the combustion chamber 5 is an inner 85 burner coil l5 and an outer cylindrically arranged burner coil 16, said coils being provided on their upper sides with a series of gas outlets or burner openings. The burner coils 15 and 16 are provided with suitable supply pipes 17 which are adapted to be connected with 90 the gas service pipe, not shown.

The combustion chamber and furnace proper is adapted to be supported at a suitable elevation by means of legs 18 and in the lower side said combustion chamber is arranged a series of air supply pipes 19, the upper ends of which connect with and open into the combustion chamber while the lower ends of said pipe extend through the shell or outer casing 2 of the furnace and communicate with the outside air, whereby the burner coils are supplied with the proper amount of air which is evenly 'distributed throughout the combustion chamber to maintain a perfect combustion of the gas' therein-l The upper inclined portion of the outer annular wall of the combustion chamber' is preferably made double so 1 0 5 that one thickness of the metal may be removed and be replaced when the same becomes burned out. inner wall of the double deflecting plate or inclined The upper portion of the outer combustion chamber Wall is preferably lined with asbestos wool which materially aids in preventing the burning out o said plate and also causes the flame from the burner to become higher and extend further upwardly into the heating tubes. The combustion chamber is provided in one sideadjacent to the supply pipes 17 of the burner coils with a suitable door 20.

By constructing the heating tubes 7 in a cylindrical form and arranging the same in an annular series around the upper side of the combustion chamber and providing air circulating spaces between said tubes, the' cold air from the lower portion of the furnace in passing upwardly through the passage 6 will circulate freely between and around said tubes and passing upwardly through the passages 9 and 14 inthe radiating drum will become thoroughly heated by contact with the walls o the tubes and radiating drum and by the heat radiated from said parts so that a furnace constructed in this manner will be capable of producing a maximum amount of heated air with a minimum amount of fuel.

From the foreging description, taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood Without requiring a more extended explanation.

Various changes in the form, proportion and the minor details of construction may be resorted to without departing from the principle or sacricing any of the advantages ofthe invention, as defined by the appended claims.

Having thus described my invention, what l claim as new and desire to secure by Letters-Patent is In :1 gas burning furnace, the combination with an outer shell or casing, of a furnace proper arranged therein and supported above the bottom thereof, said furnace proper comprising a combustion chamber having formed therein, a centrally-disposed air passage, an inwardly-inclined outer wall on said combustion chamber to form a heat and llame deecting plate, a heat radiating drum having formed therein a centrally-disposed air passage and an outer series of air passages, a series of heat conducting tubes connecting the top of the combustion chamber with the bottom of the heat radiating drum, a discharge or fume pipe connected with the inner wall of said radiating drum, a baille plate arranged in the drum between the inner Wall of the latter and the heat conducting tubes to cause a circulation of heat through the drum, burner pipes arranged in said combustion chamber and a series of cold air conducting pipes connected with the lower wall of said chamber and with the outer shell or casing of the furnace whereby air is supplied to said combustion chamber, substantially as described.

In testimony whereof we have hereunto set our hand in presence of two subscribing witnesses.

FRANK SCHREIBER. CARL SCHREIBER. CHARLES E. FLAHARIDA.

Witnesses:

HELEN M. DOUGLAS, EDWD. R. MEYER. 

